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| − | == Introduction ==
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| − | * Flash device with rootfs on external devices.
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| − | * With new releases >= rel-32, external (USB, SATA, MMC) is being used as identification is solely on UUID based and not type of media.
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| − | == Steps ==
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| − | 1. Create GPT and partiton using gdisk on external device:
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| − | $sudo gdisk /dev/sd'''x'''
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| − | "o" -> clear all current partition data
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| − | "n" -> create new partition
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| − | "1" -> partition number /dev/sd'''x'''1
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| − | "40M"first sectors -> Press enter or "+32G" last sectors
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| − | "Linux filsystem" -> using default type
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| − | "c" -> partition's name "PARTLABEL"
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| − | "w" -> write to disk and exit.
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| − | 2. Check partition UUID:
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| − | $ sudo blkid /dev/sd'''x'''1
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| − | 3. Copy PARTUUID to bootloader/l4t-rootfs-uuid.txt
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| − | 4. Copy rootfs to SDcard:
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| − | $ sudo mkfs.ext4 /dev/sd'''x'''1 (check PARTUUID again)
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| − | $ sudo mount /dev/sd'''x'''1 /mnt
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| − | $ cd rootfs/
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| − | $ sudo tar -cpf - * | ( cd /mnt/ ; sudo tar -xpf - )
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| − | $ sudo umount /mnt
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| − | 5. Flash the board with rootfs device (external is for sdcard, usb, sata and mmc):
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| − | $ sudo ./flash jetson-tx2 external
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| − |
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| − | == Check ==
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| − | After boot up, the u-boot logs will like below:
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| − | TEGRA186
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| − | Model: NVIDIA P2771-0000-500
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| − | DRAM: 7.8 GiB
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| − | MC: Tegra SD/MMC: 0, Tegra SD/MMC: 1
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| − | *** Warning - bad CRC, using default environment
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| − | In: serial
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| − | Out: serial
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| − | Err: serial
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| − | Net: eth0: ethernet@2490000
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| − | Hit any key to stop autoboot: 0
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| − | switch to partitions #0, OK
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| − | mmc1 is current device
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| − | Scanning mmc 1:1...
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| − | Found /boot/extlinux/extlinux.conf
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| − | Retrieving file: /boot/extlinux/extlinux.conf
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| − | 733 bytes read in 127 ms (4.9 KiB/s)
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| − | L4T boot options
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| − | 1: primary kernel
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| − | Enter choice: 1: primary kernel
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| − | Retrieving file: /boot/initrd
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| − | 5564673 bytes read in 697 ms (7.6 MiB/s)
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| − | Retrieving file: /boot/Image
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| − | 34179080 bytes read in 3848 ms (8.5 MiB/s)
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| − | append: '''root=PARTUUID=ec27c846-88af-41f6-bd4b-fd46c54bb5ce''' rw rootwait rootfstype=ext4 console=ttyS0,115200n8 console=tty0 fbcon=map:0 net.ifnames=0
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| − | video=tegrafb no_console_suspend=1 earlycon=uart8250,mmio32,0x3100000 nvdumper_reserved=0x2772e0000 gpt tegra_fbmem2=0x800000@0x9607b000
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| − | lut_mem2=0x2008@0x96078000 usbcore.old_scheme_first=1 tegraid=18.1.2.0.0 maxcpus=6 boot.slot_suffix= boot.ratchetvalues=0.2031647.1
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| − | bl_prof_dataptr=0x10000@0x275840000 sdhci_tegra.en_boot_part_access=1 quiet
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